Carel pCO series User manual

pCO sistema

General manual

User manual

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IMPORTANT WARNINGS

CAREL bases the development of its products on decades of experience in HVAC, on the continuous investments in technological

innovations to products, procedures and strict quality processes with in-circuit and functional testing on 100% of its products, and on

the most innovative production technology available on the market. CAREL and its subsidiaries nonetheless cannot guarantee that all

the aspects of the product and the software included with the product respond to the requirements of the final application, despite

the product being developed according to start-of-the-art techniques.

The customer (manufacturer, developer or installer of the final equipment) accepts all liability and risk relating to the configuration of

the product in order to reach the expected results in relation to the specific final installation and/or equipment.

CAREL may, based on specific agreements, acts as a consultant for the positive commissioning of the final unit/application, however

in no case does it accept liability for the correct operation of the final equipment/system.

The CAREL product is a state-of-the-art product, whose operation is specified in the technical documentation supplied with the

product or can be downloaded, even prior to purchase, from the website www.carel.com

.

Each CAREL product, in relation to its advanced level of technology, requires setup/configuration/programming/commissioning to be

able to operate in the best possible way for the specific application. The failure to complete such operations, which are

required/indicated in the user manual, may cause the final product to malfunction; CAREL accepts no liability in such cases.

Only qualified personnel may install or carry out technical service on the product.

The customer must only use the product in the manner described in the documentation relating to the product.

In addition to observing any further warnings described in this manual, the following warnings must be heeded for all CAREL

products:

• Prevent the electronic circuits from getting wet. Rain, humidity and all types of liquids or condensate contain corrosive minerals

that may damage the electronic circuits. In any case, the product should be used or stored in environments that comply with the

temperature and humidity limits specified in the manual.

• Do not install the device in particularly hot environments. Too high temperatures may reduce the life of electronic devices,

damage them and deform or melt the plastic parts. In any case, the product should be used or stored in environments that

comply with the temperature and humidity limits specified in the manual.

• Do not attempt to open the device in any way other than described in the manual.

• Do not drop, hit or shake the device, as the internal circuits and mechanisms may be irreparably damaged.

• Do not use corrosive chemicals, solvents or aggressive detergents to clean the device.

• Do not use the product for applications other than those specified in the technical manual.

All of the above suggestions likewise apply to the controllers, serial boards, programming keys or any other accessory in the CAREL

product portfolio.

CAREL adopts a policy of continual development. Consequently, CAREL reserves the right to make changes and improvements to any

product described in this document without prior warning.

The technical specifications shown in the manual may be changed without prior warning.

The liability of CAREL in relation to its products is specified in the CAREL general contract conditions, available on the website

www.carel.com

and/or by specific agreements with customers; specifically, to the extent where allowed by applicable legislation, in no

case will CAREL, its employees or subsidiaries be liable for any lost earnings or sales, losses of data and information, costs of

replacement goods or services, damage to things or people, downtime or any direct, indirect, incidental, actual, punitive, exemplary,

special or consequential damage of any kind whatsoever, whether contractual, extra-contractual or due to negligence, or any other

liabilities deriving from the installation, use or impossibility to use the product, even if CAREL or its subsidiaries are warned of the

possibility of such damage.

Disposing of the parts of the controller:

INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND

ELECTRONIC EQUIPMENT (WEEE)

In reference to European Union directive 2002/96/EC issued on 27 January 2003 and the related national

legislation, please note that:

1. WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of

separately;

2. The public or private waste collection systems defined by local legislation must be used. In addition,

the equipment can be returned to the distributor at the end of its working life when buying new

equipment;

3. The equipment may contain hazardous substances: the improper use or incorrect disposal of such

may have negative effects on human health and on the environment;

4. The symbol (crossed-out wheeled bin) shown on the product or on the packaging and on the

instruction sheet indicates that the equipment has been introduced onto the market after 13 August

2005 and that it must be disposed of separately;

5. In the event of illegal disposal of electrical and electronic waste, the penalties are specified by local

waste disposal legislation.

Contents

INTRODUCTION.............................................................................................................................................................................................................................................7

1. GENERAL FEATURES.........................................................................................................................................................................................................................7

1.1 Programmability............................................................................................................................................................................................................................................................7

2. DESCRIPTION OF THE PRODUCTS.................................................................................................................................................................................................8

2.1 pCO

3

controller..............................................................................................................................................................................................................................................................8

2.2 pCO

3

technical specifications...................................................................................................................................................................................................................................11

2.3 pCO

1

controller............................................................................................................................................................................................................................................................14

2.4 pCO

1

technical specifications...................................................................................................................................................................................................................................16

2.5 pCO

xs

board..................................................................................................................................................................................................................................................................19

2.6 pCO

xs

technical specifications...................................................................................................................................................................................................................................20

2.7 pCO

C

controller...........................................................................................................................................................................................................................................................22

2.8 pCO

C

technical specifications...................................................................................................................................................................................................................................24

3. USER TERMINALS............................................................................................................................................................................................................................27

3.1 pGD0/pGD1, pGD2/pGD3 graphic terminals......................................................................................................................................................................................................27

4. INSTALLING THE pCO CONTROLLER...........................................................................................................................................................................................31

4.1 General installation instructions..............................................................................................................................................................................................................................31

4.2 Power supply...............................................................................................................................................................................................................................................................32

4.3 Connecting the analogue inputs.............................................................................................................................................................................................................................32

4.4 Connecting the digital inputs...................................................................................................................................................................................................................................36

4.5 Connecting the analogue outputs..........................................................................................................................................................................................................................38

4.6 Connecting the digital outputs................................................................................................................................................................................................................................39

5. Configuration of the pLAN network..............................................................................................................................................................................................41

5.1 Introduction..................................................................................................................................................................................................................................................................41

5.2 Installing the pGD0 and pGD1 terminals..............................................................................................................................................................................................................43

5.3 Installing the pGD2 and pGD3 terminals..............................................................................................................................................................................................................44

5.4 Installing the Aria terminal........................................................................................................................................................................................................................................45

5.5 Setting the pLAN address on the pCO

1

, pCO

XS

, pCO

C

and pCO

3

.....................................................................................................................................................................46

5.6 pLAN electrical connections between the pCO controllers..............................................................................................................................................................................46

5.7 Remote installation of a terminal in a pLAN network........................................................................................................................................................................................47

5.8 pLAN network technical specifications..................................................................................................................................................................................................................48

6. OPTIONS AND EXTERNAL MODULES...........................................................................................................................................................................................49

6.1 Connectors...................................................................................................................................................................................................................................................................50

6.2 Optional pCO sistema boards.................................................................................................................................................................................................................................50

6.3 Signal LEDs and software updates..........................................................................................................................................................................................................................54

7. Updates, Firmware and Logs for pCO controllers.....................................................................................................................................................................................55

7.1 WINLOAD.....................................................................................................................................................................................................................................................................55

7.2 Smart Key.....................................................................................................................................................................................................................................................................56

7.3 NAND FLASH memory..............................................................................................................................................................................................................................................56

7.4 Checking the software installed on the pCO and other information..............................................................................................................................................................56

8. General connection diagrams........................................................................................................................................................................................................58

9. Troubleshooting..............................................................................................................................................................................................................................62

10. Networks and Protocols..................................................................................................................................................................................................................64

10.1 pLAN protocol.............................................................................................................................................................................................................................................................64

10.2 Local terminal protocol.............................................................................................................................................................................................................................................64

10.3 CAREL Slave protocol.................................................................................................................................................................................................................................................64

10.4 CAREL Master protocol..............................................................................................................................................................................................................................................65

10.5 CAREL Master 5 expansions protocol....................................................................................................................................................................................................................65

10.6 WinLoad protocol.......................................................................................................................................................................................................................................................66

10.7 PST protocol.................................................................................................................................................................................................................................................................67

10.8 Modbus Slave protocol.............................................................................................................................................................................................................................................67

10.9 Modbus Master protocol...........................................................................................................................................................................................................................................68

10.10 Modbus Master protocol - Benshaw...............................................................................................................................................................................................................68

10.11 PSTN protocol (modem)...................................................................................................................................................................................................................................68

10.12 GSM protocol (GSM modem)..........................................................................................................................................................................................................................69

10.13 MP-Bus protocol..................................................................................................................................................................................................................................................69

10.14 Serial printer protocol.........................................................................................................................................................................................................................................70

Appendix:

Devices that can be connected to the pCO ………..………………………………………………………………………………………………… 71

Overview of the pCO ………………………………………………………………………………………………………………............................... 79

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7

INTRODUCTION

pCO sistema: the CAREL range of programmable controllers.

This consists of programmable controllers, user interfaces, gateways and communication and remote management interfaces to offer the HVAC/R market a control

system that is powerful, flexible and easy to interface with the more commonly-used building management systems. pCO sistema is very reliable and can be easily

customised to differentiate the controller on the manufacturer’s own air-conditioning or refrigeration unit.

1. GENERAL FEATURES

All versions of these controllers use a 16-bit microprocessor and up to 4 Mbytes of memory to ensure high performance in terms of speed and memory space. The

pCO sistema controllers also come in different sizes according to the number of inputs and outputs so as to always offer the best cost/performance ratio. Given the

increasing demand for integration, the pCO sistema family can communicate using some of the most commonly-used communication serial standards, and with the

addition of optional boards can be integrated into the most widely available BMS systems.

The pCO

*

family features the possibility to connect ratiometric sensors, the integration of a Built-In terminal, an upgraded programming key and a serial port for

connection to the controlled field devices (valves, I/O expansions, electronic valve drivers…). All these features ensure our controllers a level of excellence in

responding to the needs of the HVAC/R market.

1.1 Programmability

The CAREL pCO sistema controllers can be programmed using the EasyTools development system, with the following advantages:

• transfer of the software to different types of CAREL hardware. The applications developed for the pCO can simply and quickly transferred from one hardware

platform to another (and vice-versa), simply adapting only the inputs and the outputs;

• rapid development, at competitive costs, of custom programs;

• reliability guaranteed by the use of standard routines, tested in the field.

The use of EasyTools, moreover, ensures the customer the maximum level of privacy and self-management when developing new programs on their own. The

possibility to use the same hardware for different applications allows standardisation, with the clear advantages of being able to feature in-circuit and functional testing

and burn-in procedures on all of the products and consequently reach a high level of reliability, both overall and in terms of the individual electronic components.

EasyTools: exclusive CAREL development software, easy to use, for the programming, simulation, supervision and definition of pLAN networks using CAREL terminals

and pCO programmable controllers.

1.1.1 Applications

The programmability of the pCO sistema controllers ensures the absolute flexibility of the applications.

The same standard hardware can be used to control:

• chillers and heat pumps;

• roof-top units;

• air-conditioners;

• small / medium air handling units (upon request);

• showcases (upon request and to specifications);

• cold rooms (upon request and to specifications);

• seasoning rooms;

• compressor packs;

• universal circuit-closing switches.

Other types of programs can be developed to specific customer requirements.

1.1.2 Hardware architecture

The structure of the pCO sistema controllers features:

• the pCO controller, fitted with a 16-bit microprocessor for running the control program, and the set of terminals required for connection to the controlled

devices (for example: valves, compressors, fans). The program and the parameters are saved permanently in the flash memory, preventing data loss in the event

of power failure (without requiring a backup battery).

The pCO can also be connected to pLAN networks made up of a maximum of 32 pCO controllers and terminals. Each board can exchange information without

the need for additional hardware (any variable, digital or analogue, according to the application software) at high transmission speeds. The connection to the

supervisor/telemaintenance serial line, based on the RS485 standard, is made using the optional serial boards (PCOS004850) and the CAREL communication

protocol.

• The terminal, also managed by microprocessor, fitted with display, keypad and LEDs to allow the programming of the control parameters (set point, differential

band, alarm thresholds) and basic functions by the user (ON/OFF, display of the controlled values, optional printing).

The terminal does not have to be connected to the pCO for normal operation, but can be used for the initial programming of the fundamental parameters.

The power of the application software means that the user terminal allows:

• the initial programming of the unit, with password-protected access;

• the possibility to modify, at any time, the fundamental operating parameters, optionally protected by password;

• the display and audible signalling (by buzzer) of any alarms;

• the display of the active functions, using the LEDs;

• the display of all the values measured.

pCO Sistema

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8

2. DESCRIPTION OF THE PRODUCTS

2.1 pCO

3

controller

Rx-/Tx-

Rx+/Tx+

GND

C1

NO1

NO2

NO3

C1

C4

NO4

NO5

NO6

C4

C7

NO7

C7

NO8

C8

NC8

NO12

C12

NC12

NO13

C13

NC13

C9

NO9

NO10

NO11

C9

G

G0

B1

B2

B3

GND

+VDC

+Vterm

GND

+5 VREF

B4

BC4

B5

BC5

VG

VG0

Y1

Y2

Y3

Y4

ID1

ID2

ID3

ID4

ID5

ID6

ID7

ID8

IDC1

B6

B7

B8

GND

ID9

ID10

ID11

ID12

IDC9

ID13H

ID13

IDC13

ID14

ID14H

J1

10

1

11

J24 J2 J3

J4 J5 J7

J8

J20

J21

J14

J11

J10J9

J13J12

J22

J16 J17

J18J15

J23

J6

J19

3

7

4

6

5

NO14

C14

NC14

NO15

C15

NC15

C16

NO16

NO17

NO18

C16

E-

E+

GND

8

9

2

13

ID15H

ID15

IDC15

ID16

ID16H

Y5

Y6

ID17

ID18

IDC17

B9

BC9

B10

BC10

15

14

field card serial card

8

6

5

7

12

11

16

input: 24 V / ; 50 to 60 Hz

max. power: 40 VA/15W

7

J20

J21

J22 J23

J19

C14

NO14

NO15

NO16

C14

C17

NO17

NO18

NO19

NO20

C17

E-

E+

GND

C25

NO25

NO26

NO27

NO28

NO29

C25

C21

NO21

NO22

NO23

NO24

C21

12

11

7

J20 J25

J21

J22 J23

J19

C14

NC14

NC15

NC16

C14

C17

NC17

NC18

NC19

NC20

C17

E-

E+

GND

B9

B10

BC9

C25

NC25

NC26

NC27

C25

C21

NC21

NC22

NC23

NC24

C21

5

12

11

Fig. 2.a

Key:

1. power supply connector [G (+), G0 (-)];

2. yellow power LED and 3 status LEDs (see paragraph 6.3);

3. additional power supply for the terminal and 0 to 5 V ratiometric probes;

4. universal analogue inputs: NTC, 0 to 1 V, 0 to 5 V ratiometric, 0 to 10 V, 0 to 20 mA, 4 to 20 mA;

5. passive analogue inputs: NTC, PT1000, ON/OFF;

6. 0 to 10 V analogue outputs;

7. 24 Vac/Vdc digital inputs;

8. 230 Vac or 24 Vac/Vdc digital inputs;

9. connector for the display panel (external panel with direct signals);

10. connector for all standard pCO series terminals and for downloading the application program;

11. relay digital outputs;

12. connector for connection to the I/O expansion board;

13. pLAN network connector;

14. cover for inserting the supervisor and telemaintenance option;

15. cover for inserting the field card option;

16. Built-In terminal (LCD, buttons and LEDs).

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2.1.1 Meaning of the pCO

3

inputs/outputs

Connector Signal Description

J1-1 G +24 Vdc or 24 Vac power supply

J1-2 G0 power supply reference

J2-1 B1 universal analogue input 1 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA)

J2-2 B2 universal analogue input 2 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA)

J2-3 B3 universal analogue input 3 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA)

J2-4 GND common for analogue inputs

J2-5 +VDC 21 Vdc power supply for active probes (maximum current 200 mA)

J3-1 B4 passive analogue input 4 (NTC, PT1000, ON/OFF)

J3-2 BC4 common for analogue input 4

J3-3 B5 passive analogue input 5 (NTC, PT1000, ON/OFF)

J3-4 BC5 common for analogue input 5

J4-1 VG power to optically-isolated analogue output, 24 Vac/Vdc

J4-2 VG0 power to optically-isolated analogue output, 0 Vac/Vdc

J4-3 Y1 analogue output no. 1, 0 to 10 V

J4-4 Y2 analogue output no. 2, 0 to 10 V

J4-5 Y3 analogue output no. 3, 0 to 10 V

J4-6 Y4 analogue output no. 4, 0 to 10 V

J5-1 ID1 digital input no. 1, 24 Vac/Vdc

J5-2 ID2 digital input no. 2, 24 Vac/Vdc

J5-3 ID3 digital input no. 3, 24 Vac/Vdc

J5-4 ID4 digital input no. 4, 24 Vac/Vdc

J5-5 ID5 digital input no. 5, 24 Vac/Vdc

J5-6 ID6 digital input no. 6, 24 Vac/Vdc

J5-7 ID7 digital input no. 7, 24 Vac/Vdc

J5-8 ID8 digital input no. 8, 24 Vac/Vdc

J5-9 IDC1 common for digital inputs from 1 to 8 (negative pole for DC power supply)

J6-1 B6 universal analogue input 6 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA)

J6-2 B7 universal analogue input 7 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA)

J6-3 B8 universal analogue input 8 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA)

J6-4 GND common for analogue inputs

J7-1 ID9 digital input no. 9, 24 Vac/Vdc

J7-2 ID10 digital input no. 10, 24 Vac/Vdc

J7-3 ID11 digital input no. 11, 24 Vac/Vdc

J7-4 ID12 digital input no. 12, 24 Vac/Vdc

J7-5 IDC9 common for digital inputs from 9 to 12 (negative pole for DC power supply)

J8-1 ID13H digital input 13, 230 Vac

J8-2 ID13 digital input 13, 24 Vac/Vdc

J8-3 IDC13 common for digital inputs 13 and 14 (negative pole for DC power supply)

J8-4 ID14 digital input 14, 24 Vac/Vdc

J8-5 ID14H digital input 14, 230 Vac

J9 8-pin telephone connector for connection to a display panel

J10 6-pin telephone connector for connection to the standard user terminal

J11-1 RX-/TX- RX-/TX- connector for RS485 connection to the pLAN network

J11-2 RX+/TX+ RX+/TX+ connector for RS485 connection to the pLAN network

J11-3 GND GND connector for RS485 connection to the pLAN network

J12-1 C1 common for relays: 1, 2, 3

J12-2 NO1 normally open contact, relay no. 1

J12-3 NO2 normally open contact, relay no. 2

J12-4 NO3 normally open contact, relay no. 3

J12-5 C1 common for relays: 1, 2, 3

J13-1 C4 common for relays: 4, 5, 6

J13-2 NO4 normally open contact, relay no. 4

J13-3 NO5 normally open contact, relay no. 5

J13-4 NO6 normally open contact, relay no. 6

J13-5 C4 common for relays: 4, 5, 6

J14-1 C7 common for relay no. 7

pCO Sistema

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10

Connector Signal Description

J14-2 NO7 normally open contact, relay no. 7

J14-3 C7 common for relay no. 7

J15-1 NO8 normally open contact, relay no. 8

J15-2 C8 common for relay no. 8

J15-3 NC8 normally closed contact, relay no. 8

J16-1 C9 common for relays: 9, 10, 11

J16-2 NO9 normally open contact, relay no. 9

J16-3 NO10 normally open contact, relay no. 10

J16-4 NO11 normally open contact, relay no. 11

J16-5 C9 common for relays: 9, 10, 11

J17-1 NO12 normally open contact, relay no. 12

J17-2 C12 common for relay no. 12

J17-3 NC12 normally closed contact, relay no. 12

J18-1 NO13 normally open contact, relay no. 13

J18-2 C13 common for relay no. 13

J18-3 NC13 normally closed contact, relay no. 13

J19-1 ID15H digital input 15, 230 Vac

J19-2 ID15 digital input 15, 24 Vac/Vdc

J19-3 IDC15 common for digital inputs 15 and 16 (negative pole for DC power supply)

J19-4 ID16 digital input 16, 24 Vac/Vdc

J19-5 ID16H digital input 16, 230 Vac

J20-1 Y5 analogue output no. 5 to 0 to 10 V

J20-2 Y6 analogue output no. 6 to 0 to 10 V

J20-3 B9 passive analogue input 9 (NTC, PT1000, ON/OFF)

J20-4 BC9 common for analogue input 9

J20-5 B10 passive analogue input 10 (NTC, PT1000, ON/OFF)

J20-6 BC10 common for analogue input 10

J20-7 ID17 digital input no. 17, 24 Vac/Vdc

J20-8 ID18 digital input no. 18, 24 Vac/Vdc

J20-9 IDC17 common for digital inputs 17 and 18 (negative pole for DC power supply)

J21-1 NO14 normally open contact, relay no. 14

J21-2 C14 common for relay no. 14

J21-3 NC14 normally closed contact, relay no. 14

J21-4 NO15 normally open contact, relay no. 15

J21-5 C15 common for relay no. 15

J21-6 NC15 normally closed contact, relay no. 15

J22-1 C16 common for relays: 16, 17, 18

J22-2 NO16 normally open contact no. 16

J22-3 NO17 normally open contact no. 17

J22-4 NO18 normally open contact no. 18

J22-5 C16 common for relays: 16, 17, 18

J23-1 E- E- terminal for RS485 connection to the I/O expansion modules

J23-2 E+ E+ terminal for RS485 connection to the I/O expansion modules

J23-3 GND GND terminal for RS485 connection to the I/O expansion modules

J24-1 +V term additional power supply terminal for Aria

J24-2 GND power supply common

J24-3 +5 Vref power supply for 0/5 V ratiometric probes

Note: J19, J20, J21, J22 and J23 correspond to the “LARGE” model.

pCO Sistema

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11

2.2 pCO

3

technical specifications

• pCO

3

analogue inputs

Analogue conversion 10-bit A/D converter embedded in CPU

SMALL MEDIUM and EXTRALARGE NO LARGE and EXTRALARGE NC Maximum number

5 8 10

Universal: 6 (inputs B1, B2, B3, B6, B7, B8)

-CAREL NTC (-50T90°C; R/T 10kΩ±1% at 25°C) or HT NTC (0T150°C)

-Voltage: 0 to 1 Vdc, 0 to 5 Vdc ratiometric or 0 to 10 Vdc

-Current: 0 to 20 mA or 4 to 20 mA. Input resistance: 100Ω

Can be selected via software.

Type

Passive: 4 (inputs B4, B5, B9, B10)

-CAREL NTC (-50T90°C; R/T 10kΩ ±1% at 25°C) or HT NTC (0T150°C)

-PT1000 (-100T200°C; R/T 1kΩ at 0°C) or digital input from voltage-free contact

Can be selected via software.

Normally open (open-closed-open) 250 ms

Minimum normally-open voltage-free digital input

detection time

Normally closed (closed-open-closed) 250 ms

NTC input precision ± 0.5°C

PT1000 input precision ± 1°C

0-1V input precision ± 3 mV

0-10V input precision ± 30 mV

0-5V input precision ± 15 mV

0-20 mA input precision ± 0.06 mA

Warning: for the power supply of any active probes, the 21 Vdc available at the +Vdc terminal (J2) can be used. The maximum current is 150 mA, protected against

short-circuits. To supply the 0/5V ratiometric probes, use the 5V available at the +5Vref (terminal J24). The maximum current is 60 mA.

• pCO

3

digital inputs

Type optically-isolated

no. optically-isolated inputs at 24 Vac

50/60 Hz or 24Vdc

no. optically-isolated inputs at 24

Vac/Vdc or 230 Vac 50/60 Hz

Total

SMALL 8 None 8

MEDIUM/EXTRALARGE 12 2 14

Maximum number

LARGE 14 2+2 18

Normally open (open-closed-open) 200 ms

Minimum digital input pulse detection time

Normally closed (closed-open-closed) 400 ms

230 Vac or 24 Vac (50/60 Hz) +10/-15%

Power supply to the inputs External

24Vdc +10/-20%

Classification of the measurement circuits

(IEC EN 61010-1)

Category 1 24 Vac/Vdc

Category 3 230 Vac

Warnings:

• the two 230 Vac or 24 Vac/Vdc inputs at terminals J8 (ID13, ID14) or J19 (ID15, ID16) have the same common pole and consequently both must be set to the

same voltage (230 Vac or 24 Vac/Vdc). There is primary insulation between the two inputs;

• for DC voltage inputs (24Vdc) connect the negative pole to the common terminal.

• pCO

3

analogue outputs

Type optically-isolated

4 outputs (Y1-Y4), 0 to 10 Vdc SMALL, MEDIUM and EXTRALARGE Maximum number

6 outputs (Y1-Y6), 0 to 10 Vdc LARGE

Power supply external 24 Vac/Vdc

outputs Y1-Y4 ± 2% of full scale

Precision

outputs Y5-Y6 -2/+5% of full scale

Resolution 8 bit

outputs Y1-Y4 2s

Settling time

outputs Y5-Y6 2s or 15s can be selected via software

Maximum load

1 kΩ (10mA)

pCO Sistema

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12

• pCO

3

digital outputs

Insulation distance

The relay outputs have different features depending on the model of pCO

3

.

The outputs can be divided into groups. There is double insulation between the groups (cells in the table) and consequently these may have

different voltages. There is also double insulation between each terminal of the digital outputs and the rest of the controller. The relays

belonging to the same group (individual cells in the table) have basic insulation and therefore must have the same power supply (24 Vac or

230 Vac).

Reference of the relays with the same insulation Version

Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7

SMALL 1 to 7 8

Type of relay Type A Type A

MEDIUM 1 to 7 8 9 to 13

Type of relay Type A Type A Type A

LARGE 1 to 7 8 9 to 13 14 to 18

Type of relay Type A Type A Type A Type A

EXTRALARGE NO 1 to 7 8 9 to 13 14 to 16 17 to 20 21 to 24 25 to 29

Type of relay Type A Type A Type A Type B Type B Type B Type B

EXTRALARGE NC 1 to 7 8 9 to 13 14 to 16 17 to 20 21 to 24 25 to 27

Makeup of the

groups

Type of relay Type A Type A Type A Type C Type C Type C Type C

Number of

changeover contacts

1: SMALL (output 8); 3:MEDIUM and EXTRALARGE NO/NC (outputs 8.12 and 13);

5: LARGE (outputs 8, 12, 13, 14 and 15)

Relay ratings SPDT, 2000 VA, 250 Vac, 8 A resistive

UL873

2.5 A resistive, 2 A FLA, 12 A LRA, 250 Vac, C300 pilot duty (30,000

cycles)

Relay type A

pCO

3

approval

EN 60730-1

2 A resistive, 2 A inductive, cosϕ=0.6, 2(2)A (100,000 cycles)

Relay ratings SPDT, 1250 VA, 250 Vac, 5 A resistive

UL873 1 A resistive, 1 A FLA, 6 A LRA, 250 Vac, D300 pilot duty (30,000 cycles)

Relay type B

pCO

3

approval

EN 60730-1

1 A resistive, 1 A inductive, cosϕ=0.6, 1(1)A (100,000 cycles)

Relay ratings SPDT, 1250 VA, 250 Vac, 5 A resistive

UL873 1 A resistive, 1 A FLA, 6 A LRA, 250 Vac, D300 pilot duty (30,000 cycles)

Switchable power

Relay type C

pCO

3

approval

EN 60730-1

1 A resistive, 1 A inductive, cosϕ=0.6, 1(1)A (100,000 cycles)

Maximum number

of SSR outputs

1: SMALL (output 7); 2:MEDIUM and EXTRALARGE NO/NC (outputs 7 and 12); 3: LARGE (outputs 7, 12 and 14)

Electrical specifications: working voltage 24 Vac/Vdc, maximum switchable output 10 Watts

Warnings:

• The groups that the digital outputs are divided into have two common pole terminals to simplify wiring;

• make sure that the current running through the common terminals does not exceed the rated current of an individual terminal, that is, 8 A.

• pCO

3

mechanical specifications

Mechanical dimensions

SMALL 13 DIN modules 110 x 227.5 x 60mm

MEDIUM, LARGE, EXTRALARGE 18 DIN modules 110 x 315 x 60mm

Plastic container

Assembly Fitted on DIN rail as per DIN 43880 and IEC EN 50022

Material Technopolymer

Flame retardancy V0 (UL94) and 960°C (IEC 695)

Ball pressure test 125°C

Resistance to creeping current

≥ 250 V

Colour Grey RAL7035

• pCO

3

other features

Operating conditions -25T70°C, 90% RH non-condensing

Storage conditions -40T70°C, 90% RH non-condensing

Index of protection IP20, IP40 on the front panel only

Environmental pollution 2

Class according to protection against electric shock to be integrated into Class 1 and/or 2 appliances

PTI of the insulating materials 250 V

Period of stress across the insulating parts long

Type of action 1C

Type of disconnection or microswitching microswitching, for all relay outputs

Category of resistance to heat and fire Category D

Immunity against voltage surges Category 1

Ageing characteristics (operating hours) 80,000

No. of automatic operating cycles 100,000 (EN 60730-1); 30,000 (UL 873)

Software class and structure Class A

Category of immunity to voltage surges (IEC EN 61000-4-5) Category 3

Error at 25 °C ±5.3 min/year

Error in the temperature range –10T60 °C ±27 min/year

Ageing < ± 5ppm (±2.7min/year)

Battery duration typically 6 months (maximum 8 months)

Clock

Recharge time typically 5 hours (<8 hours maximum)

pCO Sistema

Code: +030220336 - rel. 1.3 - 24/06/09

13

• pCO

3

electrical specifications

Power supply 24 Vac +10/-15% 50/60 Hz and 28 to 36Vdc +10/-20%

Maximum current with terminal connected 40 VA (Vac) / 15 W (Vdc)

Type of insulation of the power supply from the rest of the controller -

Terminal block with male/female plug-in connectors (250 Vac max, 8 A max)

Cable cross-section min 0.5 mm

2

– max 2.5 mm

2

CPU H8S2320, 16 bit, 24 MHz

Program memory (FLASH MEMORY) 2+2 Mbyte (Dual Bank) 16 bit

Data memory (RAM) 512 Kbyte, 16 bit

T memory, buffer (EEPROM) 13 Kbyte

P memory, parameters (EEPROM) 32 Kbyte, not available to the pLAN network

Working cycle duration (application of average complexity) 0.2 s

Clock with battery standard

pCO

3

dimensions (in mm)

•

MEDIUM, LARGE, EXTRALARGE N.O. and N.C.: 18 DIN modules

110

45

315

60

44

Fig. 2.b

•

SMALL: 13 DIN modules

227,5

110

45

60

44

Fig. 2.c

Product certification:

• IEC EN 50155 standard: “Railway applications • Electronic equipment used on rolling stock”;

• UL 873 and C22.2 No. 24-93: “Temperature-Indicating and -Regulating Equipment”;

• EC regulations 37/2005 of 12 January 2005; in particular, if the electronic controller is fitted with standard Carel NTC probes, it is compliant with standard

EN13485 on “Thermometers for measuring the air temperature in applications on units for the conservation and sale of refrigerated, frozen and deep-frozen

food and ice cream”.

pCO Sistema

Code: +030220336 - rel. 1.3 - 24/06/09

14

2.3 pCO

1

controller

Rx-/Tx-

Rx+/Tx+

GND

C1

NO1

NO2

NO3

C1

C4

NO4

NO5

NO6

C4

C7

NO7

C7

NO8

C8

NC8

NO13

C13

NC13

C9

NO9

NO10

NO11

C9

G

G0

B1

B2

B3

B4

+VDC

B5

GND

B6

GND

VG

VG0

Y1

Y2

Y3

Y4

ID1

ID2

ID3

ID4

ID5

ID6

ID7

ID8

IDC1

B7

GND

B8

GND

ID9

ID10

ID11

ID12

IDC9

ID13H

ID13

IDC13

ID14

ID14H

Fuse

Analog Selection Serial Card

Clock card

Programming Key

J1

J2

J3

J5

J6

J7

J8

J10

J11

J12

J13

J14

J15

J16

J17

J18

+5V Rif

GND

+V Term

J9

J4

10

1

11

12

14

3

7

8

4

6

5

8

9

2

16

15

17

13

Fig.. 2.d

Key:

1. power supply connector [G (+), G0 (-)]

2. 250 Vac, 2 A slow-blow fuse (T2 A)

3. universal analogue inputs: NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA

4. passive analogue inputs: NTC and ON/OFF

5. passive analogue inputs: NTC

6. yellow power LED and 3 status LEDs (see paragraph 6.3)

7. 0 to 10 V analogue outputs and PWM outputs

8. 24 Vac/Vdc digital inputs

9. 230 Vac or 24 Vac/Vdc digital inputs

10. connector with Vref for power supply to 5V ratiometric probe and V term for power supply to Aria terminal

11. connector for all standard pCO* series terminals and for downloading the application program

12. pLAN network connector

13. programming key connector

14. relay digital outputs

15. port for selecting the type of analogue inputs

16. cover for inserting the optional supervisor and telemaintenance board

17. cover for inserting the clock board

2.3.1 Meaning of the pCO

1

inputs/outputs

Connector Signal Description

J1-1 G +24 Vdc or 24 Vac power supply

J1-2 G0 power supply reference

J2-1 B1 universal analogue input 1 (NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA)

J2-2 B2 universal analogue input 2 (NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA)

J2-3 B3 universal analogue input 3 (NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA)

J2-4 B4 universal analogue input 4 (NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA)

J2-5 +VDC 24 Vdc power supply for active probes (maximum current 100 mA)

J3-1 B5 passive analogue input 5 (NTC, ON/OFF)

J3-2 GND common for analogue input 5

J3-3 B6 passive analogue input 6 (NTC, ON/OFF)

J3-4 GND common for analogue input 6

J4-1 VG power to optically-isolated analogue output, 24 Vac/Vdc

J4-2 VG0 power to optically-isolated analogue output, 0 Vac/Vdc

J4-3 Y1 analogue output no. 1, 0/10 V

J4-4 Y2 analogue output no. 2, 0/10 V

J4-5 Y3 analogue output no. 3, PWM (for phase cutting speed controllers)

J4-6 Y4 analogue output no. 4, PWM (for phase cutting speed controllers)

J5-1 ID1 digital input no. 1, 24 Vac/Vdc

pCO Sistema

Code: +030220336 - rel. 1.3 - 24/06/09

15

Connector Signal Description

J5-2 ID2 digital input no. 2, 24 Vac/Vdc

J5-3 ID3 digital input no. 3, 24 Vac/Vdc

J5-4 ID4 digital input no. 4, 24 Vac/Vdc

J5-5 ID5 digital input no. 5, 24 Vac/Vdc

J5-6 ID6 digital input no. 6, 24 Vac/Vdc

J5-7 ID7 digital input no. 7, 24 Vac/Vdc

J5-8 ID8 digital input no. 8, 24 Vac/Vdc

J5-9 IDC1 common for digital inputs from 1 to 8 (negative pole for DC power supply)

J6-1 B7 passive analogue input 7 (NTC)

J6-2 GND common for analogue input 7

J6-3 B8 passive analogue input 8 (NTC)

J6-4 GND common for analogue input 8

J7-1 ID9 digital input no. 9, 24 Vac/Vdc

J7-2 ID10 digital input no. 10, 24 Vac/Vdc

J7-3 ID11 digital input no. 11, 24 Vac/Vdc

J7-4 ID12 digital input no. 12, 24 Vac/Vdc

J7-5 IDC9 common for digital inputs from 9 to 12 (negative pole for DC power supply)

J8-1 ID13H digital input 13, 230 Vac

J8-2 ID13 digital input 13, 24 Vac/Vdc

J8-3 IDC13 common for digital inputs 13 and 14 (negative pole for DC power supply)

J8-4 ID14 digital input 14, 24 Vac/Vdc

J8-5 ID14H digital input 14, 230 Vac

J9-1 + 5 V ref power supply for 0/5 V ratiometric probes

J9-2 GND power supply common

J93 + Vterm additional power supply terminal for Aria

J10 6-pin telephone connector for connection to the standard user terminal

J11-1 TX- RX-/TX- connector for RS485 connection to the pLAN network

J11-2 TX+ RX+/TX+ connector for RS485 connection to the pLAN network

J11-3 GND GND connector for RS485 connection to the pLAN network

J12-1 C1 common for relays: 1, 2, 3

J12-2 NO1 normally open contact, relay no. 1

J12-3 NO2 normally open contact, relay no. 2

J12-4 NO3 normally open contact, relay no. 3

J12-5 C1 common for relays: 1, 2, 3

J13-1 C4 common for relays: 4, 5, 6

J13-2 NO4 normally open contact, relay no. 4

J13-3 NO5 normally open contact, relay no. 5

J13-4 NO6 normally open contact, relay no. 6

J13-5 C4 common for relays: 4, 5, 6

J14-1 C7 common for relay no. 7

J14-2 NO7 normally open contact, relay no. 7

J14-3 C7 common for relay no. 7

J15-1 NO8 normally open contact, relay no. 8

J15-2 C8 common for relay no. 8

J15-3 NC8 normally closed contact, relay no. 8

J16-1 C9 common for relays: 9, 10, 11

J16-2 NO9 normally open contact, relay no. 9

J16-3 NO10 normally open contact, relay no. 10

J16-4 NO11 normally open contact, relay no. 11

J16-5 C9 common for relays: 9, 10, 11

J17-1 NO12 normally open contact, relay no. 12

J17-2 C12 common for relay no. 12

J17-3 NC12 normally closed contact, relay no. 12

J18-1 NO13 normally open contact, relay no. 13

J18-2 C13 common for relay no. 13

J18-3 NC13 normally closed contact, relay no. 13

pCO Sistema

Code: +030220336 - rel. 1.3 - 24/06/09

16

2.4 pCO

1

technical specifications

• pCO

1

analogue inputs

Analogue conversion 10-bit A/D converter embedded in CPU

SMALL MEDIUM Maximum number

6 8

Universal: 4 (inputs B1, B2, B3, B4)

-CAREL NTC (-50T90°C; R/T 10kΩ±1% at 25°C) HT NTC (0T150°C)

-Voltage 0 to 1 Vdc, 0 to 5 Vdc ratiometric

-Current 0 to 20 mA or 4 to 20 mA. Input resistance: 100Ω.

Can be selected via dipswitch

Type

Passive: 4 (inputs B5, B6, B7, B8)

-CAREL NTC (-50T90°C; R/T 10kΩ±1% at 25°C)

HT NTC (0T150°C)

-Digital input (inputs B5, B6) from voltage-free contact

Can be selected via dipswitch

Normally open (open-closed-open) 250 ms

Minimum normally-open voltage-free digital input

detection time

Normally closed (closed-open-closed) 250 ms

Time constant for each input 2s

Input precision NTC ± 0.5°C

Input precision 0-1V ± 3 mV

Input precision 0-5V ± 15 mV

Input precision 0-20 mA ± 0.06 mA

Warning: for the power supply of any active probes, the 24 Vdc available at the +Vdc terminal (J2) can be used. The maximum current is 100 mA, protected against

short-circuits. To supply the 0/5V ratiometric probes, use the 5V available at the +5Vref (terminal J9). The maximum current is 60 mA.

• pCO

1

digital inputs

Type optically-isolated

no. optically-isolated inputs

at 24 Vac 50/60 Hz or 24Vdc

no. optically-isolated inputs

at 24 Vac/Vdc or 230 Vac

50/60 Hz

Total

SMALL 8 None 8

Maximum number

MEDIUM 12 2 14

Normally open (open-closed-open) 200 ms

Minimum digital input pulse detection time

Normally closed (closed-open-closed) 400 ms

230 Vac or 24 Vac (50/60 Hz) +10/-15%

Power supply to the inputs external

24Vdc +10/-20%

Warnings:

• the two 230 Vac or 24 Vac/Vdc inputs at terminals J8 have the same common pole and consequently both must be set to the same voltage (230 Vac or 24

Vac/Vdc). There is primary insulation between the two inputs;

• for DC voltage inputs (24Vdc) connect the negative pole to the common terminal.

• pCO

1

analogue outputs

Type optically-isolated

Maximum number 2 outputs (Y1-Y2), 0 to 10 Vdc and

2 outputs (Y3-Y4) PWM with 5 V pulse of programmable

duration

SMALL, MEDIUM

Power supply external 24 Vac/Vdc

Precision outputs Y1-Y2 ± 1% of full scale

Resolution 0.5%

Settling time outputs Y1-Y2 2s

Maximum load

1 kΩ (10mA) for 0 to 10 Vdc and 470Ω (10mA) for PWM

pCO Sistema

Code: +030220336 - rel. 1.3 - 24/06/09

17

• pCO

1

digital outputs

Insulation distance

The relay outputs have different features depending on the model of pCO

1

The outputs can be divided into groups. There is double insulation between the groups (cells in the table) and consequently these may have

different voltages. There is also double insulation between each terminal of the digital outputs and the rest of the controller. The relays belonging to

the same group (individual cells in the table) have basic insulation and therefore must have the same power supply (24 Vac or 230 Vac).

Reference of the relays with the same insulation Version

Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7

SMALL 1 to 3 4 to 6 7 8

Type of relay Type A Type A Type A Type A

MEDIUM 1 to 3 4 to 6 7 8 9 to 11 12 13

Makeup of the

groups

Type of relay Type A Type A Type A Type A Type A Type A Type A

Number of

changeover contacts

1: SMALL (output 8); 3: MEDIUM (outputs 8, 12 and 13);

Relay ratings SPDT, 2000 VA, 250 Vac, 8 A resistive

UL873 2.5 A resistive, 2 A FLA, 12 A LRA, 250 Vac, C300 pilot duty (30,000 cycles)

Switchable power Relay type A

pCO

1

approval

EN 60730-1

2 A resistive, 2 A inductive, cosϕ=0.6, 2(2)A (100,000 cycles)

Maximum number

of SSR outputs

2: SMALL (output 7 and 8); 4: MEDIUM (outputs 7, 8, 12 and 13);

Electrical specifications: working voltage 24 Vac/Vdc, maximum switchable output 10 Watts

Warnings:

• The groups that the digital outputs are divided into have two common pole terminals to simplify wiring.

• Make sure that the current running through the common terminals does not exceed the rated current of an individual terminal, that is, 8 A

• pCO

1

mechanical specifications

Mechanical dimensions

SMALL 13 DIN modules 110 x 227.5 x 60mm

MEDIUM 18 DIN modules 110 x 315 x 60mm

Plastic container

Assembly Fitted on DIN rail as per DIN 43880 and IEC EN 50022

Material technopolymer

Flame retardancy V0 (UL94) and 960°C (IEC 695)

Ball pressure test 125°C

Resistance to creeping current

≥250 V

Colour Grey RAL7035

• pCO

1

other features

Operating conditions -10T60°C, 90% RH non-condensing

Storage conditions -20T70°C, 90% RH non-condensing

Index of protection IP20, IP40 on the front panel only

Environmental pollution 2

Class according to protection against electric shock to be integrated into Class 1 and/or 2 appliances

PTI of the insulating materials 250 V

Period of stress across the insulating parts long

Type of action 1C

Type of disconnection or microswitching microswitching, for all relay outputs

Category of resistance to heat and fire Category D

Immunity against voltage surges Category 1

Ageing characteristics (operating hours) 80,000

No. of automatic operating cycles 100,000 (EN 60730-1); 30,000 (UL 873)

Software class and structure Class A

Category of immunity to voltage surges (IEC EN 61000-4-5) Category 3

Error at 25 °C ±5.3 min/year

Error in the temperature range –10T60 °C ±27 min/year

Ageing < ± 5ppm (±2.7min/year)

Battery duration typically 6 months (maximum 8 months)

Clock

Recharge time typically 5 hours (<8 hours maximum)

• pCO

1

electrical specifications

Power supply 24 Vac +10/-15% 50/60 Hz and 22 to 38Vdc +10/-20%

Maximum current with terminal connected P=13 W

Type of insulation of the power supply from the rest of the controller -

Terminal block with male/female plug-in connectors (250 Vac max, 8 A max)

Cable cross-section min 0.5 mm

2

– max 2.5 mm

2

CPU H8S2320, 16 bit, 14 MHz

Program memory (FLASH MEMORY) 2 Mbyte, 16 bit

Data memory (RAM) 512 Kbyte, 8 bit

T memory, buffer (FLASH MEMORY) 4 Kbyte, 16 bit

P memory, parameters (EEPROM) optional (32 Kbyte not available to the pLAN network)

Working cycle duration (application of average complexity) 0.5 s

Clock with battery optional

pCO Sistema

Code: +030220336 - rel. 1.3 - 24/06/09

18

Dipswitches for selecting the type of probe

123456

ON

OFF

123456 12

123456 123456

123456

NTC

Esempio/ Example

123456

B1 B2 B3 B4 B5 B6

Input B1, B2, B3, B4

Input

ON digital input

OFF NTC

Input B5, B6

B1 B2 B3 B4 B5 B6

NTC NTC digital input

ON

OFF

ON

OFF

NTCdigital

input

pCO

1

dimensions (in mm.)

•

MEDIUM 18 DIN modules

44

Fig. 2.e

•

SMALL 18 DIN modules

44

Fig.. 2.f

pCO Sistema

Code: +030220336 - rel. 1.3 - 24/06/09

19

2.5 pCO

xs

board

Key:

1 Power supply connector [G (+), G0 (-)], 24 Vac or 24 to 48 Vdc;

2 Input (24 Vac) for phase control and NTC, 0/1 V, 0/5 V, 0/20 mA, 4/20 mA

analogue inputs, +5Vref for power supply to 5V ratiometric probe and

+24 Vdc power to active probes;

3 0 to 10 V analogue outputs and PWM output;

4 Digital inputs with voltage-free contact;

5 Connector for all standard pCO* series terminals and for downloading the

application program;

6 pLAN network connector;

7 tLAN terminal connector;

8 tLAN or MP-Bus network connector;

9 Relay digital outputs with one common;

10 Relay/SSR digital output;

11 Digital output for alarm relay with changeover contact/SSR;

12 Yellow power LED and 3 status LEDs

(see paragraph 6.3)

13 Cover for inserting the supervisor and telemaintenance option

14 Cover for inserting the clock board;

15 Built-In terminal.

Fig. 2.f

2.5.1 Meaning of the pCO

xs

board inputs/outputs

Connector Signal Description

J1-1 G 24 Vac or 24 to 48 Vdc power supply

J1-2 G0 power supply reference

J2-1 SYNC synchronicity input for phase control (G0 is the reference)

J2-2 B1 universal analogue input 1 (NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA)

J2-3 B2 universal analogue input 2 (NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA)

J2-4 B3 universal analogue input 3 (NTC, 0/5 V)

J2-5 B4 universal analogue input 4 (NTC, 0/5 V)

J2-6 GND reference for the analogue inputs

J2-7 +5VREF power supply for 0/5 V ratiometric probes

J2-8 +24VDC 24 Vdc power supply for active probes

J3-1 Y1 analogue output no. 1, 0/10 V

J3-2 Y2 analogue output no. 2, 0/10 V

J3-3 Y3 analogue output no. 3, PWM (for phase cutting speed controllers)

J3-4 GND reference for analogue output

J4-1 ID1 digital input no. 1

J4-2 ID2 digital input no. 2

J4-3 ID3 digital input no. 3

J4-4 ID4 digital input no. 4

J4-5 ID5 digital input no. 5

J4-6 ID6 digital input no. 6

J4-7 IDC1 common for digital inputs from 1 to 6

J5 6-pin telephone connector for connection to the standard user terminal

J6-1 RX-/TX- RX-/TX- connector for RS485 connection to the pLAN network

J6-2 RX+/TX+ RX+/TX+ connector for RS485 connection to the pLAN network

J6-3 GND reference for RS485 connection to the pLAN network

J7 tLAN terminal connector

J8-1 TLAN connector to the tLAN network

J8-2 GND reference for connection to the tLAN network

J9-1 C1 common for relays: 1, 2, 3

J9-2 NO1 normally open contact, relay no. 1

J9-3 NO2 normally open contact, relay no. 2

J9-4 NO3 normally open contact, relay no. 3

J10-1 C4 common for relays: 4

J10-2 NO4 normally open contact, relay no. 4

J11-1 NO5 normally open contact, relay no. 5

J11-2 C5 common for relays: 5

J11-3 NC5 normally closed contact, relay no. 5

Tab. 2.e

G

G0

SYNC

B1

B2

B3

B4

GND

+5VREF

+24VDC

Y1

Y2

Y3

GND

ID1

ID2

ID3

ID4

ID5

ID6

IDC1

RXTX-

RXTX+

GND

TLAN

GND

C1

NO1

NO2

NO3

C4

NO4

NO5

C5

NC5

J1

J5

J6

J7

J8

J9

J10

J11

J2

J3

J4

CLOCKCARD

SERIALCARD

13

1

12

14

5678 9 10 11

3 42

built-in terminal

xs

15

pCO Sistema

Code: +030220336 - rel. 1.3 - 24/06/09

20

2.6 pCO

xs

technical specifications

• pCO

XS

analogue inputs

Analogue conversion 10-bit A/D converter embedded in CPU

Maximum number 4

Type Universal: 2 (inputs B1, B2)

-CAREL NTC (-50T90°C; R/T 10kΩ±1% at 25°C)

-Voltage 0 to 1 Vdc, 0 to 5 Vdc ratiometric;

-Current 0 to 20 mA or 4 to 20 mA. Input resistance: 100Ω

Can be selected via software

Universal: 2 (inputs B3, B4)

-CAREL NTC (-50T90°C; R/T 10kΩ±1% at 25°C)

-Voltage 0 to 5 Vdc ratiometric

Can be selected via software

Time constant for each input 1 s

Input precision NTC ± 0.5°C

Input precision 0-1V ± 3 mV

Input precision 0-5V ± 15 mV

Input precision 0-20 mA ± 0.06 mA

Warning: for the power supply of any active probes, the 24 Vdc available at the +Vdc terminal (J2) can be used. The maximum current is 80 mA, protected against

short-circuits. To supply the 0/5V ratiometric probes, use the 5V available at the +5Vref (terminal J2). The maximum current is 60 mA.

• pCO

XS

digital inputs

Type Not optically-isolated with voltage-free contact

no. optically-isolated inputs at 24 Vac 50/60 Hz

or 24Vdc

no. optically-isolated inputs at 24 Vac/Vdc or 230

Vac 50/60 Hz

Total

Maximum number

6 None 6

Normally open (open-closed-open) 150 ms

Minimum digital input pulse detection time

Normally closed (closed-open-closed) 400 ms

Power supply to the inputs internal

• pCO

XS

analogue outputs

Type Not optically-isolated

Maximum number 2 outputs (Y1 and Y2), 0 to 10 Vdc and

1 output (Y3), PWM with 5V pulse of programmable duration

Power supply internal

Precision outputs Y1-Y2 ± 3% of full scale

Resolution 8 bit

Settling time outputs Y1-Y2 2s

Maximum load

1 kΩ (10 mA) for 0 to 10 Vdc and 470Ω (10 mA) for PWM

Note: the synchronicity for the PWM output derives from the SYNC and G0 inputs. The PWM output (Y3) can become a pulse modulation output (duration of the

pulse proportional to the analogue value) by setting the software. The PWM may be in synchronicity with the SYNC signal or have a fixed cycle duration of 2 ms.

• pCO

XS

digital outputs

Insulation distance

The relay outputs have different features depending on the model of PCO

XS

.

The outputs can be divided into groups. There is double insulation between the groups (cells in the table) and consequently these may have

different voltages. There is also double insulation between each terminal of the digital outputs and the rest of the controller. The relays

belonging to the same group (individual cells in the table) have basic insulation and therefore can have the same power supply (24 Vac or 230

Vac).

Reference of the relays with the same insulation Version